The Air-Fuel Ratio Is Too Lean If this ratio is too lean (meaning there’s too much air and not enough fuel), it could also lead to backfiring. If this is the case, clogged fuel injectors, a bad fuel pump, or a vacuum leak are all potential culprits.

Severe detonating can raise combustion chamber temperatures from normal to well above the melting point of many metals, causing potentially serious damage to pistons and valves. All things being equal, the quickest cure for detonation is to switch to a higher octane gasoline.

Pinging is best described as “Like a pile of marbles dropping onto metal.” Another describes pinging as “like marbles in a tin can.” That sound shows that there’s an underlying problem easily fixed by putting in the right octane gas or temporarily increasing the octane rating at your next fill-up.

A car knock sensor is located on the intake manifold, cylinder, or engine block. A bad knock sensor may also not let the engine accelerate properly while driving on the highway, and cause the vehicle to lose fuel mileage. …

Your knock sensor is an electrical device on your truck, car or Sport Utility vehicle that detects knocks in your engine caused by premature detonation of the air-fuel mixture as it enters the cylinder head. If you ever need to bypass your knock sensors, the most direct way of doing so is to simply disconnect them.

Symptoms of a bad or failing engine knock sensor include slow acceleration, reduced fuel economy, and the Check Engine Light turning on. A car knock sensor is located on the intake manifold, cylinder, or engine block. The purpose of the knock sensor is to sense unusual pulsations caused by the engine detonation.

Wow, you hit the bad-news jackpot, William. The knock sensor is a complete pain in the tailgate to replace. You have to remove the air plenum, the intake manifold, the timing belt and lots of other stuff to get at it.

If you are a regular DIYer, you can install a knock sensor yourself, as it simply needs replacing the sensor and connecting the proper wires.

Well you are looking at 3-4 hours of labor for the knock sensors with spark plugs plus parts. Average labor charge for a dealership is 100-130 per hour. average for an independent shop is around 70-100 dollars.

The average cost for a Chevrolet Silverado 1500 knock sensor replacement is between $161 and $187. Labor costs are estimated between $101 and $128 while parts are priced at $59.